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    • 7. 发明授权
    • Plane emission type semiconductor laser device and method of manufacturing the same
    • 平面发射型半导体激光器件及其制造方法
    • US07006544B2
    • 2006-02-28
    • US10835692
    • 2004-04-30
    • Yuichi KuromizuHironobu NaruiYoshinori YamauchiYoshiyuki TanakaYoshiaki Watanabe
    • Yuichi KuromizuHironobu NaruiYoshinori YamauchiYoshiyuki TanakaYoshiaki Watanabe
    • H01S5/00
    • B82Y20/00H01S5/0207H01S5/18311H01S5/305H01S5/343H01S2301/166
    • A plane emission type semiconductor laser device includes, on an n-type GaAs stepped substrate, a laminate structure of a lower reflector, a lower clad layer, an active layer, an upper clad layer, an upper reflector, and a p-type contact layer. The stepped substrate includes a circular (100) plane upper level portion, a step portion, and an annular (100) plane lower level portion surrounding the upper level portion with the step portion therebetween. When an AlAs layer is grown as a current confinement layer on the stepped substrate while implanting Si as an n-type impurity into the AlAs layer being grown, the impurity concentration in the AlAs layer on the upper side of the upper level portion is higher than that on the upper side of the step portion, and the oxidation rate of the AlAs layer on the upper side of the upper level portion is lower than that on the upper side of the step portion, so that the progress of oxidation of the AlAs layer on the upper side of the upper level portion is autonomously restrained. By time control of the oxidation reaction of the AlAs layer, it is possible to maintain the circular AlAs layer on the upper side of the upper level portion in an unoxidized state with an accurate shape and an accurate area.
    • 平面发射型半导体激光器件在n型GaAs阶梯式衬底上包括下反射器,下覆层,有源层,上覆层,上反射器和p型接触层的层叠结构 层。 台阶式基板包括圆形(100)平面上部分,台阶部分和围绕上部部分的环形(100)平面下部部分,其间具有台阶部分。 当AlAs层在阶梯状衬底上生长为电流限制层,同时将Si作为n型杂质注入到正在生长的AlAs层中时,上层部分上侧的AlAs层中的杂质浓度高于 在台阶部的上侧,上层部的上侧的AlAs层的氧化速度低于台阶部的上侧的氧化速度,使得AlAs层的氧化进程 在上层部分的上侧被自主地限制。 通过对AlAs层的氧化反应进行时间控制,可以将具有精确形状和准确面积的未上氧化状态的上层部分的上侧的圆形AlAs层维持在一起。